Binary package “libjffi-jni” in ubuntu focal

Java Foreign Function Interface (JNI library)

 JFFI is a wrapper for libffi, the foreign function interface library. A foreign
 function interface is the popular name for the interface that allows code
 written in one language to call code written in another language.
 Java-based codings helper classes for Joni and JRuby
 .
 This package ships the Java native interface library.